20201122012210 has 16 divisors (see below), whose sum is σ = 36550423872216. Its totient is φ = 8038581193728.

The previous prime is 20201122012151. The next prime is 20201122012213. The reversal of 20201122012210 is 1221022110202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7505632808881 + 12695489203329 = 2739641^2 + 3563073^2 .

It is not an unprimeable number, because it can be changed into a prime (20201122012213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5233449369 + ... + 5233453228.

Almost surely, 2^{20201122012210} is an apocalyptic number.

20201122012210 is a deficient number, since it is larger than the sum of its proper divisors (16349301860006).

20201122012210 is a wasteful number, since it uses less digits than its factorization.

20201122012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10466902797.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20201122012210 its reverse (1221022110202), we get a palindrome (21422144122412).

The spelling of 20201122012210 in words is "twenty trillion, two hundred one billion, one hundred twenty-two million, twelve thousand, two hundred ten".